cantweiie



March 8, 1932. J CANTWELL 1,848,765

JACK

2 Sheets-She et 2 Filed Feb. 28. 1927 Jain/ 163711720622 Patented Mar. 8, 1932 PATENT oFFrcE JOHN M. oAn'rwEI-m, or zrnnmrrownj KEWYORI QANN onnrwnnn Amvimis' TRATRIX or S ID? :rpmr M; cement, rnncnasnn JAGKI implications. filed? February: 28, 1925; Serial" Nb'i. 1171;498'. i

This invention relatesvto, screw litting jacksspanticnlarly} adapted foruseiwith motorvehicles the object: of? thQ lIIYGI-IUOIL being to;

provide animproved jack; which man be readily carriedv atxfthe rear of. themotorvehicl'e and used as an extrastire carrier.

[another object oi the .inventioni-is-tl-iepro vision of a combined jack; tire. carrienjand;

tire; tool; by means ofWhich-the jackcan be used to carry an. extra tire, but=can1also be used; as a meansior removing; or replacing shoes on therim. a 1 A, further object-of. the invention istheprovision: of. an improved ack, simple. incon;-

struction, strong, durable, powerful'in use,

easily operated and comparatively inexpens-ilve, to. manufacture; and so constructed? that it may be readily, used ,fo1" a yery; low lift: and-yetzcasilyadjusted: for. a high. or anextrazhigh lift, .asmay be necessary and ,Whichcan. not only be used as a tire tool but alsoaas-an cX-t-ratire carrier and-may thereforezbe carried at the rear. of the can.v

In the drawings. accompanying and-form ing apart of thisaspecificat'i'on; Fig, l'isi a side. View ofthis improved ack. with-bothi-screws; raised Without theztires-upporting;ironshowne in. Fig. 8 appliedi-toathe base. of ither-j ack; Fig. 24 is rafvei'tical; sectional-viewof this improved:

, j acl'rl withthescrews nearly closed position Fig: 3 is, a'detail view oi the, tubular: screw. Fig. 4t illustrates they-jack in position: on -t-he rear. of acar-in posltionito support anextra:

tire; Fig: 5 isasperspective; View oftonecfr therimtoollironsr Fig. Gisaperspective View illustrating; a COOPGlTfltlIlg-IJIII tool,. 1non=;;F 1g,

iron shown in Fig.7? to theirim "tool.iron;

shown: in, Fig-.. 5. V 7

Similar characters of refrenceindicate correspondingiparts intthe several figures-ofithez drawings...

Beforeexplaining inidetailithe presentiim provementi and mode off operation thereofil desireto-haveitunderstoodthattheinvention iswnot: limited to the details. of construction andi 'arrangementnof parts. which are illustratedin the accompanying drawings; since the invention: is capable t :OthQE'QmbQdi ments and-thatthephraseology which 1 ploy iszforthe purpose ofrdescription and not otlimitation. f u 'Ehis: improved jack in its preferred. form; comprises asuitable' casing 2, cOmprisingJacylindrical portion 3- havirrg an enlarged; chamber 4:at.its;base. The. upper and either casing is provided with; an inwardly extend ing-flange 5 and: to-the base isattachedlby means ofsuitable screws: a bottom plate 6..- Located in. this casing is, a; rotatable tubularsleeve: 7, the, upper end ofiW-hich is ovenlaappedby; the flange 5! While the-lower end hasxtormed thereon-0r castith erewith; a gear 8,,the underside of whichcisofconvex formal; tion and: is provided centrally; thereot. with; aha rdened steel bearing knob: or projection: i-resting ini-a depizession 1 0 .oi the .basepla te thereby forming apivot al support for there?- tation ofthis sleeve. Inmesh with this large g ea-rfg is ai -bevel. gearv 11:, the1 spindle 12 of which projectsv through a bored. hub 13= at; the: side. oftthe chamber the. 12; being v, provided. with a squared: end 14', for. the. reception, of a suitable handle. or crank which. is i usually 0t telescopic form whereby thejackmay be. easily placedgunder thescar Whereverv reqnired and; as easily' remoy-ed; Without. the necessity of getting under the? cars; or i Withimthe rotarytubular-sleeve 7 is agpair of telescopingscrews 1:5 andQ16 both ofsubri V stantiallythe same length. and. bothepref erably right handed screws.- vThe outer screw 15 is {in the form 0f a tubular member having exterior: threadsglf'l along its length meshing-With:a'threadedportion or c0llan1'18'; located :atthe upper end; onthe interiou of? the tubular sleeve: 7 This itubularionhollow, screw 1'5r is alsoa provided at its upper end with aninteriorlyithreaded portionorcol;--

lar :19 meshing w-itlithreads 20 locatedi-alongthe length-- of. the. inner; screw 16 m which; is 1 shownuas a-,s01id:-bar; The-tubular sorewl5 as at 27.

enabling the ack to have a very low lift, and

yet the screws can be extended to give a very high lift. The tubular screw 15 has its-- threads smoothed or slabbed off, see Fig. 3, at its upper and lower ends as at 23 and 24 respectively and with which slabbed portions the longitudinal slot 20 communicates,

the slabbed portion at the upper end being at one side of the slot and the slabbed portion at the lower end at the opposite end of the slot. The inner screw member 16 is provided with a suitable pin, not shown, insertible through suitable openings 16 at the lower end of the tubular sleeve 7 and screw 15, for limiting the upward movement of the screw 16, this pin coming into engagement with the threaded portion 19 of the tubular screw 15 and the latter is likewise provided with a suitable pin 25 which when it comes into engagement with the interior threads 18 of the tubular sleeve 7 will limit the upward movement of the screw 15. The top of the screw 16 is reduced for the reception of a support ing member or head 26 preferably pinned thereto and this head isslotted at its ends These slots terminate in circular recesses 27 for the reception of stirrup bars 28 of a pair of tire rim irons 29. These rim irons, by means of the slotted circular recesses can be swung up or down and can also be removed but only when in a horizontal position owing to the fact that the stirrup bars are flattened at their sides as at 28; These flattened portions correspond in thickness substantially to the slotted portions of the recesses while at right angles to these flattened portions as at 28" they correspond substantially to the circular portions of such recesses. These tire rim irons are provided with alternately located steps 30 and 31, one

jack step carried by each iron, and the irons are also provided with alternately located openings 32, each in position for the reception of one of the j acksteps. Thus each iron is provided with a jack step and an opening,

- one above the other and as stated, these openings are alternately located as are also the steps, so that when these rim irons are swung into a raised position from that shown in Fig. 1, the step of one iron will project into an opening of its companion iron and these recesses or steps may have a tapered form,

thereby to bind or wedge the irons in upright position. In the present instance the steps are shown as of tapered form.

Due to the alternate location of the steps it will be observed that the jack can be used when the steps are in the position shown in Fig. 1 to engage the part to be lifted at dif ferent heights below the head 26 of the jack, so that in any position of the screws, raised or completely lowered, both of the steps are in position to engage under a low hung axle or frame of a vehicle, thus providing a very eflicient means for getting under the axle or frame. of. a motor car when the wheels have sunk in the mud or sand.

Each iron is provided at its top with a suitable extension 33 which can be used when the irons are swung upward to increase the height of the jack and these extensions terminate in hooked ends 34 adapting the irons to be used as a tire tool. When it is desired to use the jack and the swinging irons as a tire tool, a bifurcated plate 35, see Fig. 6, is used. This is slippedover the base plate with the tongue or projection 36 extending downward. By swinging the irons up so as to engage the tire rim first at one side of the joint and then at the opposite sides of such joint and hooking plate into the rim at the opposite side of the rim and manipulating the screws through the medium of its gears, the rim may be contracted to remove a shoe and in the last posi tion may be expanded after the shoe is inposition.

' In spreading the shoe rim it is necessary merely to use the swinging rim irons 29 and not the iron 35 of Fig. 6, since the base of the jack may be used against the rim. In contracting the rim, however, the lower iron 35 is used.

The jack can also be used as a spare tire carrier and for this purpose it is particularly Well adapted by the provision of channel irons such as shown in Figs. 7 and 8. Each channel iron 37, two being used, one for each rim tool, see Fig. 7, has a longitudinally recessed. underside 38 and the iron-is provided with an upwardly bent inner end 39 terminating ina bifurcated or slotted portion 40 adapted to fit under the hook end 34 of a rim iron. The upwardly bent end conforms in shape to the hooked end 34 of the rim iron and the recessed lower side 38 receives the extended portion 33 of the rim iron thus rigidly interlocking the tire carrier iron. The latter is provided with a series of openings 41 and in the longitudinally recessed or channeled upper side 42 of the iron is. located a tire clip 43 secured to the iron by a suitable bolt and nut 44, the bolt of which may project through any one of the openings in the iron to adjust the clip and thereby the iron to different widths of rims. As the nut is on the upper side of the iron and in contact with the tire rim when the shoe and its rim are in position while the bolt head is of smooth or convex formation, it follows that removal of the bolt for the purpose of removing the tire is prevented. Cooperating with these tire supporting irons means 37,0ne fer each rim iron 29, is an iron45, see 8,0f somewhat-similar format'iondn that it is also of longitudinally channeled form and provided with a bent end-46 and-an ad justa ble clip 47 adjustably securedin positionby a bolt and nut 48 and suitable openin-gs 4:9. This iron however-is providedwith a headed pin 5O on its inneror upper side in positionto be received a slotblofthe bob tom plate 6 of the jack. This bottomplate also has a recessil52 for the reception of: a rivet head 53 whereby the proper positioning of the "lower tire-iron is insured.

The manner in which the "jack is used carry t-lle spare 'tireis shown in Fig.4. The

bottom iron 45 carried by the' base plate '6 of the j ac-h "is so positionedthat one bent end 46 of the iron 45 overlaps "the rim ofthe -shoe while the other bent portion or clip as Hove-r laps the extra shoe rim which usually -:comes with the car. The irons carried by -the tire 'r'i n irons are also-positioned ina similarzmanner, the clips of the irons being of course ad justed-properlyto permitthis result. There upon by manipulating the jack gears the screws are somewhat extended so as to firmly position the ack in place, thereby supportingthe extra shoe in positionon "the :rearof the car. To prevent release of the jack and removal of the spare shoe, the spindle 12 of the bevel gear 11 and-the hub 13 ofthe casing are provided with registering openings 60 through which the shank of a lock may be inserted s5 that when the jack-and shoearein position, the turning of the bevel pinion gear -11 is prevented and-consequently the manipulation-0f theaclr is prevented;

In'the operation of this improved jack, the -rotation of the small bevel pinion gear 11 rotates the large bevel gear 8 carried at the bottom of the threaded sleeve 7, which is of course held against longitudinal move ment by the base plate '6 and the flange-'5. The rotation of this sleeve around thettibu lar screw 15 forces the latter upward,the rotation of the screw being preventedby the tooth 21 assing along the longitudinal slot 20of the screw 15. This upward movement of the tubular outer screw 15- carries with it the inner solid screw 16 without however rotating or extending it. When, how ever, the ,screw15 has reached its extended position, tooth 21 passes out of the slot 20 and registers with the lewer-slabbed rtion 24 and thus slips out of the slot 20 of the screw 1'5-whereuponthis screw 15 will herotated by the tubular sleeve'7, as the-tooth will simply slip over the lower-threads of this screw. This rotation of the screw-15 then rotates and proj ects'theinner screw 16 until the same has been fully extended. If the height of the jack is not-- then suflicient the rim irons 29 may be thrown upward and A reverse operation, as soon'as the rotation of the screw 15 brings the slot- 20 opposite the tooth-21 then lowers the screw 15-until it has been' fully-lowered and when the slabbedofi" portion 23 at the top of this screw '15 comes opposite the tooth 21 the tubularrscrew will then be rotated again by the sleeve 7 thereby to return :the inner screw 16 in a manner which willibe readily understood.

'Fromithe foregoing it will be observed that if each screw is about eight inches in height a-jack isprovidedhaving a total liftof about 15 inohessince the screws necessarily over lapa small amount,zwitho.ut the :use of :the rim irons Qflwhile with the use of the rim irons :the height of thejackis materially in eneasedpraetically another 15 inches, thisdepending-npon xthe lengthuof the rim irons.

Thus, I have providedaaj ack which is useful tormanyv purposes, and particularl useful fonmotor'vehicles where the under rame or axles low :hun-gor close to the ground. Furthermore, it will observed that both screws are ofzthe. same length and yet are no greater in length than the casing. It will also :be observed 'thatthe large bevel gear 8 formed-as .a part. of the sleeve 7 forming the base: thereof, so that this sleeve and bevel gear :can be. in one casting with the sleeve resti'ngxat Iitscenterdirectly 0n the plate 6 by means of the hardened steel rivet 0r knob .9 without the-necessity of providing any ballraees since. the frictional resistance is very slight. Furthermore, asthe threads 18 v are. formed as. apart ofthe sleeve 7 and as the threads :19 areforrned .as a part of the tubular screw. '15, this eliminates the necessity providing separate pinned collars likely to be displaced and by slabbing off the threadsofithescrews in the'manner described the necessity of: specially. machining annular grooves; :is avoided while theprovision of a springpressedtooth which can be easily remowed and replaced when worn .is permitted.

Thusit 'will' be observed that. when the .serewsaretelescoped theijack-may have a height:ofabout 7 or 8tinches and if the tirerimironsarein position and swing downward both of the steps will be below the top :th-ough'the axle or underframe of the car is within a few inches-of the ground or road bed. When the jack screws are .fully extended the jack will have a total height of 'otithezcasing -so that eithercan be used even I three times the height of the casing 7v .and'ifsthisiis not suflicient-or if for any reason agre-ater-height is desired the tire rim irons 29 may bewswung upward'thereby increasing :the'height to practically double the heighteo-f tthe lifting screws. In this instance ieplaced. It will also be observed that by the provision of the tire irons shown in Figs. 7 and 8, the jack is readily used as an extra tire carrier and when properly positioned neither the shoe nor the jack can be removed, and that the irons have the clips thereof adjustable to fit any size of tire rim while the nuts are inaccessible when the shoe is in position so that it cannot be tampered with.

Thus I have provided an improved jack simple in construction and inexpensive to manufacture and one which is easily operated, the same being an improvement in part over the jack shown in my Patent No. 1,540,511, dated June 2, 1925, and my con temporaneously pending application Serial No. 116,780, filed June 18,1926.

It is to be understood that by describing in detail herein any particular form, structure or arrangement, it is not intended to limit the invention beyond the terms of the several claims or the requirements of the prior art.

Having thus explained the nature of my said invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it may be made, or all of the modes of its use, I claim:

1. A jack comprising a base, lifting means and means for operating said lifting means, a pair of swinging members carried by the lifting means, and means carried by the base and swinging members for supporting a motor vehicle shoe rim, said last means .also having means for positioningthe jack on a vehicle. i

2. A jack comprising a base, lifting means and means for operating said lifting means, a pair of swinging members carried by the lifting means, means carried by the base and swinging members for supporting a motor vehicle shoe rim, and means for locking said lifting means in its shoe supporting position. 3LA jack comprising a base, a pair of lifting means. and means for operating them, one of said lifting means having a head, a pair of swinging rim irons carried by said head, and detachable tire supportingirons interlocked with said rim irons and base for supporting a shoe rim.

4. A jack comprising a base, a pair of lifting means, and means for operating them, one of said lifting means having a head, a pair of swinging rim irons carried by said head, detachable tire supporting irons interlocked with said rim irons and base for sup porting a shoe rim, and means for locking said lifting means in their shoe supporting position.

5. A jack comprising a casing, a-pair of lifting means carried therein and means for operating said means, a pair of swinging rim irons carried by one of said lifting means,

and means carried by said rim irons and base forsupporting a shoe rim, said last means also having means for positioning the jack on a vehicle.

6. A jack comprising a casing, a pair of lifting means Carried therein and means for operating said means, a pair of swinging rim irons carried by one of said lifting means, and means carried by said rim irons and base for supporting a shoe rim, said rim. supporting means having means adjustable to various widths of rims.

7. A jack comprising a casing, a pair of lifting means carried therein and means for operating said means, a pair of swinging rim irons carri d by one of said lifting means, means carried by said rim irons and base of supporting a shoe rim, and means for locking said lifting means.

8. A shoe rim supporting iron for use with a jack and comprising a lengthwise channel shaped member having a bent end and an adjustable clip secured adjacent to its opposite end, said iron having means for interlocking it with the base or a tire removing iron of the jack.

9. A rim iron for use with a jack and having a hooked end, a stirrup end, and there between a step and an opening.

10. A pair of rim irons for use with a ack each having. a hooked end, a stirrup end and intermediate thereof a step and an opening, the steps and openings of said irons being alternately'located'.

11. The combination of a rim iron and a tire supporting iron for use with a jack, said rim iron having a hooked shaped end and said'tire iron having a channeled portion and a slotted end for receiving portions of the rim iron.

12. The combination of a rim iron and a tire supporting iron for use with a jack, said rim iron having a hooked shaped end and said tire iron having a channel portion and a slotted end for receiving portions of the rim iron, said tire iron having an adjustable clip. I

13. A combined rim iron and tire supporting iron for use with a ack, one having a channeled portion for the reception of the other and one having a hook and the other a recessed end for interlocking engagement.

14. A rim removing iron and tire supporting iron for use with a ack, said irons having unthre-aded interlocking portions.

. 15. A rim iron and tire supporting iron for use with a jack, said irons having unthreaded interlocking portions and said tire iron having an adjustable clip.

' 16. A rim iron and tire supporting iron for use witha jack, said irons having interlocking portions, said tire iron having an adjustable clip and said rim iron having a projecting step. 17 A iron and tire supporting iron for use with a jack, said irons having interlocking portions, said tire iron having an adjustable clip and said rim iron having a projecting step, an opening'and a stirrup formed end.

18. A jack having a base, lifting means, and means for operating said lifting means, and tire removing means comprising a member cooperating with the base, and a pair of members cooperating with the lifting means and having alternately located permanently fixed steps.

19. A jack comprising a base, lifting means, and means for operating said lifting means, tire removing means cooperating with the base and with the lifting means, and tire rim supporting means cooperating with the tire removing means carried by the lifting means, said supporting means also having means for attaching the jack to a vehicle.

20. A jack comprising a base, lifting means, and means for operating said lifting means, tire removing means cooperating with the base and with the lifting means, and tire rim supporting means cooperating with the tire removing means carried by the lifting means, said tire removing means having alternately located steps.

21. In a screw lifting jack, the combination of supporting means, a pair of telescopic lifting screws, means for lifting one of said screws without rotating it and for then rotating it thereby to lift the other screw, said means including a rotatable sleeve and gear mechanism connected with said sleeve for rotating it, one of said screws having a slot and alternately extending slabbed portions at opposite ends of said slot, and means cooperating with said slot and slabbed portions. 7

22. In a lifting jack, the combination of a pair of telescopic outer and inner screws,

a threaded sleeve embracing said outer screw for operating the same, a supporting casing housing said sleeve and having a projecting key located above said sleeve, said outer screw having a vertical keyway for receiving said key and slabbed portions at its ends, one extending in a direction opposite to that of the other, and gearing for rotating said sleeve and thereby shifting the screws.

23. A jack having a base plate and lifting means, said plate having a slot and a shoe rim supporting iron having means for engaging the rim of a shoe and a pin adapted to project into said slot.

24. A jack having a base plate and lifting means, said plate having a slot and a shoe rim supporting iron having adjustable means for engaging the rim of a shoe and a pin adapted to project into said slot.

Signed at Sea Clifi, N. Y., this 24 day of February, 1927.

JOHN M. GANTWELL. 

